//
//  WBSVisitorView.swift
//  DLSwift微博
//
//  Created by 丁浪涛 on 2016/11/12.
//  Copyright © 2016年 丁浪涛. All rights reserved.
//

import UIKit

//访客视图
class WBSVisitorView: UIView {
    
    //注册按钮
     lazy var registerButton: UIButton = UIButton.cz_textButton(
        "注册",
        fontSize: 16,
        normalColor: UIColor.orange,
        highlightedColor: UIColor.black,
        backgroundImageName: "common_button_white_disable")
    //登录按钮
     lazy var loginButton: UIButton = UIButton.cz_textButton(
        "登录",
        fontSize: 16,
        normalColor: UIColor.darkGray,
        highlightedColor: UIColor.black,
        backgroundImageName: "common_button_white_disable")
    
    //访客视图的信息字典 
    //如果是首页 imageName  == “”
    var visitorInfo :[String: String]?
        {
        didSet{
        
            guard let imageName = visitorInfo?["imageName"],
                    let message = visitorInfo?["message"]
            else{
                return
            }
        
            tipLabel.text = message
            
            if imageName == "" {
                startAnimation()
                return
            }
            iconView.image = UIImage(named:imageName)
            //其他控制器的访客视图 不需要显示小房子 & 遮罩视图
            houseIconView.isHidden = true
            maskIconView.isHidden = true
            
        }
    }
    //旋转图标动画
    fileprivate func startAnimation(){
    let anim  = CABasicAnimation(keyPath: "transform.rotation")
        anim.toValue = 2*M_PI
        anim.repeatCount = MAXFLOAT
        anim.duration = 15
        
        
        //动画完成不删除 如果iconView被释放  动画一起会被销毁
        //在设置连续播放的动画 非常有用
        anim.isRemovedOnCompletion = false
        
        
        //讲动画添加到图层 layer
        iconView.layer.add(anim, forKey: nil)
        
    }
    
    override init(frame: CGRect) {
     
        super.init(frame: frame)
           setUpUI()
    }
    
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    // MARK: -私有控件
    //懒加载属性只有调用 UIKit 控件指定的构造函数 不加“：类型”。其他都需要加。调用OC的方法 都需要加
    //一般来说 都加上就万无一失了
    //图像视图
    fileprivate lazy var  iconView:UIImageView =  UIImageView(image: UIImage(named: "visitordiscover_feed_image_smallicon"))
    
    fileprivate lazy var maskIconView:UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_mask_smallicon"))
    //小房子
    fileprivate lazy  var houseIconView:UIImageView  = UIImageView(image: UIImage(named: "visitordiscover_feed_image_house"))
    //提示标签
    fileprivate lazy  var  tipLabel : UILabel = UILabel.cz_label(
        withText: "关注一些人，回这里看看有什么惊喜关注一些人，回这里看看有什么惊喜",
        fontSize: 14,
        color: UIColor.darkGray)
    
 }

extension WBSVisitorView
{
    func setUpUI()
    {
        backgroundColor = UIColor.cz_color(withHex: 0xEDEDED)
        
        //1. 添加控件
        addSubview(iconView)
        addSubview(maskIconView)
        addSubview(houseIconView)
        addSubview(tipLabel)
        addSubview(registerButton)
        addSubview(loginButton)
        
        tipLabel.textAlignment = .center
        //纯代码的自动布局
        //2. 取消 autoresizing
        // autoresizing 和 autolayout 是不能共存的
        //纯代码写的时候 默认是autoresizing ；
        //xib 写的时候 默认是 aytolayout
        
        for v in subviews
        {
            v.translatesAutoresizingMaskIntoConstraints = false
            
        }
        // 3. 自动布局
        let  margin :CGFloat = 20.0
        //1> 图像视图
        addConstraint(NSLayoutConstraint(item: iconView,
                                         attribute: .centerX,
                                         relatedBy: .equal,
                                         toItem: self,
                                         attribute: .centerX,
                                         multiplier: 1.0,
                                         constant: 0))
        addConstraint(NSLayoutConstraint(item: iconView,
                                         attribute: .centerY,
                                         relatedBy: .equal,
                                         toItem: self,
                                         attribute: .centerY,
                                         multiplier: 1.0,
                                         constant: -60))
        //2> 小房子
        addConstraint(NSLayoutConstraint(item: houseIconView,
                                         attribute: .centerX,
                                         relatedBy: .equal,
                                         toItem: iconView,
                                         attribute: .centerX,
                                         multiplier: 1.0,
                                         constant: 0))
        addConstraint(NSLayoutConstraint(item: houseIconView,
                                         attribute: .centerY,
                                         relatedBy: .equal,
                                         toItem: iconView,
                                         attribute: .centerY,
                                         multiplier: 1.0,
                                         constant: 0))
        addConstraint(NSLayoutConstraint(item: tipLabel,
                                         attribute: .centerX,
                                         relatedBy: .equal,
                                         toItem: iconView,
                                         attribute: .centerX,
                                         multiplier: 1.0,
                                         constant: 0))
        addConstraint(NSLayoutConstraint(item: tipLabel,
                                         attribute: .top,
                                         relatedBy: .equal,
                                         toItem: iconView,
                                         attribute: .bottom,
                                         multiplier: 1.0,
                                         constant: margin))
//    NSLayoutAttribute.notAnAttribute
        addConstraint(NSLayoutConstraint(item: tipLabel,
                                         attribute: .width,
                                         relatedBy: .equal,
                                         toItem: nil,
                                         attribute: .notAnAttribute ,
                                         multiplier: 1.0,
                                         constant: 266))
        //注册按钮
        addConstraint(NSLayoutConstraint(item: registerButton,
                                         attribute: .left,
                                         relatedBy: .equal,
                                         toItem: tipLabel,
                                         attribute: .left,
                                         multiplier: 1.0,
                                         constant: margin))
        addConstraint(NSLayoutConstraint(item: registerButton,
                                         attribute: .top,
                                         relatedBy: .equal,
                                         toItem: tipLabel,
                                         attribute: .bottom,
                                         multiplier: 1.0,
                                         constant: margin))
        
        addConstraint(NSLayoutConstraint(item: registerButton,
                                         attribute: .width,
                                         relatedBy: .equal,
                                         toItem: nil,
                                         attribute: .notAnAttribute,
                                         multiplier: 1.0,
                                         constant: 100))
        
        //登录按钮
        addConstraint(NSLayoutConstraint(item: loginButton,
                                         attribute: .right,
                                         relatedBy: .equal,
                                         toItem: tipLabel,
                                         attribute: .right,
                                         multiplier: 1.0,
                                         constant: -margin))
        addConstraint(NSLayoutConstraint(item: loginButton,
                                         attribute: .top,
                                         relatedBy: .equal,
                                         toItem: tipLabel,
                                         attribute: .bottom,
                                         multiplier: 1.0,
                                         constant: margin))
        
        addConstraint(NSLayoutConstraint(item: loginButton,
                                         attribute: .width,
                                         relatedBy: .equal,
                                         toItem: registerButton,
                                         attribute: .width,
                                         multiplier: 1.0,
                                         constant: 0))
        
        //设置遮罩图像
        //views: 定义VFL中的空间名称和实际名称的映射关系
        // metrics :定义 VFL 中（）制定的常数映射关系
   
        let viewDict = [ "maskIconView" : maskIconView,
                         "registerButton" : registerButton] as [String : Any]
       let metrics = ["spacing" : -20]
        addConstraints(NSLayoutConstraint.constraints(
                                                    withVisualFormat: "H:|-0-[maskIconView]-0-|",
                                                     options: [],
                                                     metrics: nil,
                                                     views: viewDict))
        addConstraints(NSLayoutConstraint.constraints(
            withVisualFormat: "V:|-0-[maskIconView]-(spacing)-[registerButton]",
            options: [],
            metrics: metrics,
            views: viewDict))
 
    }

}
